Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3eb44f26da1a4ad…

MALICIOUS

PDF

91.2 KB Created: 2020-11-16 18:19:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-21
MD5: db286f0aff251fa5b6702dc71288dd3a SHA-1: 85d8530d137fa6504311f65982c339a11ccf2448 SHA-256: d3eb44f26da1a4ad5e19ac59b402f2655f7342745fb675180aa4f04fafaa135a
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://trafficel.ru/123?utm_term=distress+tolerance+skills+handout+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367632/normal_5f8777c7bad30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393911/normal_5f9ac89280747.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389823/normal_5f92e960a42ee.pdfIn PDF document text
    • https://wesujugureju.weebly.com/uploads/1/3/0/8/130874517/buterisojek.pdfIn PDF document text
    • https://wizejuxexena.weebly.com/uploads/1/3/4/6/134655833/gijesepipukezabikil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369505/normal_5fa1ef1d46965.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365542/normal_5f981bf37d245.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/aaeace2d-0be2-487c-a3cf-ce20c3e869ee/41570217877.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0a21405-e950-4611-a32e-91dcb6460b48/74871302103.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/3189881544.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/chicago_manual_of_style_download.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/ancient_greece_geography_worksheet.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012862.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12862 5308 bytes
SHA-256: db385f9bd90329411a2eac640d4c91c6a892db20c93a1d5769263a7d81a037fa
font_01_sfnt_off00013a6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A6B 10832 bytes
SHA-256: 7d94555e0ece07bfac1ab71f4034f45c67863af79ac2126386f98aaf75ee6a9a